Ok, heres the thing.

My batt keeps draining completely so I have to jump it from my sis' corsa.

As far as electrics go I turn everything off, obviously, when i get out but thennext morning its gone again. I replaced fan belt and that aint helped.. The only thing i can think is the alarm cos I have tried not alarming it and just locking and it seems to hold its charge better. any ideas as to why the alarm would be draining the batt this much? Theres only my blinky-LED and that dont empty a car batt overnight!

battery gone crap? Dose it have sufficient distilled water?.. Sounds like you need a newen

If you have a meter handy, disconnect one of the battery leads and put the meter set to amps between the battery post and lead. This will show the amount of current being drained. 0.25 of an amp, not a problem, probably your led and radio live. Much more than that and that is your problem. Something will be on, when it should be off. Trace the problem, and Robert is your mothers brother.

Cheers

D

RallyCinq- Me and pa jus done that this morning, but to come on here and read your post is reassuring that we are doing the right thng.

Currently drawing 4 milliamps when everything is off that should be and the alamr is on. When i "weep-weep" my R/C/L the peak output is 8 amps (Motors turning CL and alrm winking and indicators flashing) then it stettles staright back down to 4 milliamps. Now, is 4 enough to drain it? overnight I mean. it could be the combo of alarm LED, radio LED but thats all i can think.

Is 4 milliamps too much over 0.25 of an amp to cause an issue?

Any more thoughts from people... I was hopnig for a kind of "Oh yeah, commonproblem, that'll be this... " kind of an answer... hehe

4 milliamps is less than .25 of an amp, unless my brain has completely expired.

Therefore, the battery is the suspect. If you can find someone with a resistance tester, assuming you don't have one tucked behind the settee, then that will give a further clue.

Its basically a large resistence load with a meter that will subject the battery to a large load. If the battery starts to boil because of the load applied, then the battery is fubared.

Cheers

D

4 milliamps is literally 4 thousandths of an amp, i.e. 0.004A. That's actually less than the average LED would drain - a 4mA current draw would take months to drain a car battery.

There's a good chance your battery is shot. Mine used to lose charge which made it a bugger to start (salthough never to the point where it had to be jumped). You're in Sheffield aren't you, do you know Allan Kay Components in Handsworth? They're very good for batteries, I paid £24 inc VAT for a Motaquip one with a 3 year guarantee.

www.kaycomp.co.uk
or
Allan Kay Components Ltd
Unit 4, Iron Bridge Industrial Estate
395 Retford Road, HANDSWORTH
Sheffield S13 9WA
TEL: 0114 288 0116
FAX: 0114 288 0203

I can't recommend this place highly enough, they're really helpful, have pretty much everything in stock and if not they can usually get just about anything in the same or next day. And they're dirt cheap too

Oh, and this may be a silly question, but have you tried hooking it up to a battery charger overnight?

Thanks to all with the replies. I didnt mean 4 milliamps i meant 40 i think... amps, watts and volts aren't my field, they're pa's. I think he just came to the conclusion (Without me, i was playing PS2) that the batterys shot. Apparently with a new toy he bought (Which measures the amount of charge the battery has) the battery was holding about 75% charge after a night of charging, and as soon as we locked the doors it dropped back down to 25%. Not holding its charge then.

We got it from Halfords about 3 weeks ago so Its still under guarantee. I shalltake it back at some point. Thanks for Jonny's recomendation, I didnt know them but will check them out.

Thanks all.